[Bug tree-optimization/40073] Vector short/char shifts generate sub-optimal code

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40073

--- Comment #17 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Yup, those testcases work fine for powerpc, too; and the signed versions of
those
do as well.  (I couldn't find vector-types.h; I did "#define VECTOR_SIZE 16").